Submission #995266

#	Time	Username	Problem	Language	Result	Execution time	Memory
995266		gmroh06	철도 요금 (JOI16_ho_t3)	C++14	100 / 100	91 ms	22868 KiB

2016_ho_t3

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using pll = pair<ll, ll>;

inline void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}

const ll INF = 1e18;

ll n, m, q;

int main() {
    fastio();

    cin >> n >> m >> q;

    vector<vector<pll>> gr(n);
    vector<ll> idx(m, q), ans(n, -1), dist(n, INF);
    vector<ll> fin(q + 1, 0);

    for (ll i = 0, a, b; i < m; i++) {
        cin >> a >> b;

        gr[a - 1].emplace_back(b - 1, i);
        gr[b - 1].emplace_back(a - 1, i);
    }

    for (ll i = 0, k; i < q; i++) {
        cin >> k;

        idx[k - 1] = i;
    }

    ans[0] = q;
    dist[0] = 0;

    queue<ll> qu;
    qu.emplace(0);

    while (!qu.empty()) {
        ll loc = qu.front();
        qu.pop();
        
        for (auto& [x, i] : gr[loc]) {
            if (dist[x] > dist[loc] + 1) {
                dist[x] = dist[loc] + 1;
                qu.emplace(x);
            }

            if (dist[x] == dist[loc] + 1) {
                ans[x] = max(ans[x], min(ans[loc], idx[i]));
            }
        }
    }

    for (auto& x : ans) {
        fin[x]++;
    }

    for (ll i = 0, tmp = fin[0]; i < q; tmp += fin[++i]) {
        cout << tmp << '\n';
    }

    return 0;
}

Compilation message (stderr)

2016_ho_t3.cpp: In function 'int main()':
2016_ho_t3.cpp:49:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   49 |         for (auto& [x, i] : gr[loc]) {
      |                    ^

• Subtask 1: 12 / 12
• Subtask 2: 14 / 14
• Subtask 3: 35 / 35
• Subtask 4: 39 / 39